API functions returning Promises should not throw exceptions.

Source/bindings/core/v8/V8Binding.h

Index: Source/bindings/core/v8/V8Binding.h
diff --git a/Source/bindings/core/v8/V8Binding.h b/Source/bindings/core/v8/V8Binding.h
index a93aa9e248a460ecf261e9d909afc60505db1221..b2934cac34e5300bc69349939eaadf188d3a870d 100644
--- a/Source/bindings/core/v8/V8Binding.h
+++ b/Source/bindings/core/v8/V8Binding.h
@@ -962,18 +962,6 @@ private:
     v8::TryCatch& m_block;
 };
 
-class V8ResetTryCatchScope FINAL {
-public:
-    explicit V8ResetTryCatchScope(v8::TryCatch& block) : m_block(block) { }
-    ~V8ResetTryCatchScope()
-    {
-        m_block.Reset();
-    }
-
-private:
-    v8::TryCatch& m_block;
-};
-
 } // namespace blink
 
 #endif // V8Binding_h